Controlling means for starters for internal-combustion engines



April 3, 1928. 1,664,522

W. METZROTH CONTROLLING MEANS FOR STARTERS FOR INTERNAL COMBUSTIONENGINES Original Filed Oct. 13, 1922 2 Sheets-Sheet l J .24 f 4 5 J 1 A;5e 5+ 55 Q I INVENTOR.

A TTORNEYS April 3, 1928. 1,664.522

W. METZROTH CONTROLLING MEANS FOR STARTERS FOR INTERNAL COMBUSTIONENGINES F'led 0 b. l w Ongmal 1 A? 3, 13 922 2 Sheets Sheet 2 INVENTOR.

ATTORNEYS Patented Apr. 3, 1928.

UNITED STATES WILLIAM METZROTH, OF SYRACUSE, NEW YORK.

GOIN'TROLLING' STARTER-S FOB, INTERNAL-GOMBUSTION ENGINES.

Original application filed October 13, 1922,"Seria1 3N0. ESBhZLf).Divided and this application filed June 3,

This invention relates to mechanism for controlling the starting ofinternal combustion engines and has for its object a particularly simpleand compact arrangement of the ignition switch and the parts controllingthe application of thepower of the starting motor to the engine by whichthe switch and such parts can be locked by a single lock mechanism. I

Other objects will appear throughout the specification. V

Tn describing this invention, reference is bad to the accompanyingdrawings. in which like characters designate corresponding parts in allthe views. p

Figure 1 is a vertical sectional view, partly "in, elevation, of thiscontrolling mechanism for starting motors.

Figure 2 is a sectional view on line 2-2, Fig... i

Figure 3 is an elevation of the head or button, the casing thereforbeing shown in section.

Figure 4 is a sectional view on line H, Fig. 2. 1

Figureb is a sectional view online 55, Fig. 2; i

This'controlling mechanism comprises an operating member, a supportingor guiding member therefor. the operating member being movablerelativelyf to the supporting member, and a lock carried by one of saidmembers operable to hold the operating.

member from movement and hence prevent starting of the engine. Itfurther includes an ignition switch, the closing of which is controlledby said lock.

1 designates the operating member which is here illustrated as areciprocally movable head or button located near the floor 2 of themotor vehicle in position to be depressed by the pressing of the footthereon.

3 is the support or guide for the operating member 1, it being hereshown as a tubular post extending through the floor 2. This post isfixed to any suitable part of the engine, or the car body in anywell-known manner and carries a housing 4 at its lower end; here shownas enclosing a switch, and supporting terminals which are connected tothe battery and to the motor respectively.

The head or button 1 is mounted on the outer or upper end of the postandis formed with a stem 5 extending into the post and tending throughswitch arm 8 at Serial m. 34,550.

housing the end of the post. is provlded with a tubular extension 7enthe post and carrying a its lower end, which arm 8 moves'into and outof contact with the 'tcrminals9 carried by the housing 5, theseterminals having binding devices 10 for the wires leading from thebattery and to the motor. A coiled'spring 11 is inserted be tween thehead and the casing 4 and within the guideor post 3, the spring servingto hold the head 1 elevated and the switch arm 8 separated from theterminals 9, and also toreturn the head 1 and parts carried thereby, totheirinituil position after being operated. The extension 7 merelyserves to transmit the movement of thehead 1, and

lock is carried by the head 1, and comprises a bolt 12, and key-operatedmechanism for actuating thebolt. The bolt is slidable in a transversepassage 13- in the head 1, transversely of the recess 6,-the bolt havingpassages or slots I l-arranged to be brought into registration. withthewalls of the tubular guide Bf to permit the operation oi? the head-1, and full portions 15 arranged to overlie the end of the guide 3 andhold the head. from being depressed. The key-actuated mechanism may beof any suitable form, size and construction and is located in a casing16 mounted in a transverse recess 17, formed in the head above thepassage 13 and arranged at a right angle thereto. This mechanismcomprises av rotating part or a. part 18 movable about an axis when thepropor key is used. The construction of the lock per se forms no part ofmy invention, The motion is transmitted from the part 18 to the bolt 12by means here shown as a disk or wheel. 19 mounted on the part 18 torotate therewith and having a pair of shoulders 20, 21, for engaging alug 22 on the bolt. When the wheel is rotated in one direction, as tothe left, Fig. 4, the shoulder 20 engages the lug 22 and moves the boltso that it obstructs the recess 6 to the entrance of the post 3, andwhen said wheel. is moved in the opposite direction the shoulder 21engages the lug 22,

and shifts the bolt 12 to aline the slots 14 with the recess 6 and thewalls of the post.

The Wheel 19* is shown as provided with through which the recess 17opens-,the'recess 17 opening at its inner end through the? bottom of therecess26.

2'1 and 28 are terminals on the inner face of'the base 25. 29 is aswitch arm mounted on one terminal as 2'5, and movable into and out ofengagement with the other terminal 28'. Tliisswitch 29' is a leadispring tensiron'ed to hold" itself away from the terminal 28. Theterminals 27, 28 are provided with bindingcdevices 30, 31, on the: outerface of the block, and the wires" 32 of the ignition circuit, which areconnected tosarid binding devices extending through the hollow stem 7.v

The switch arm 29- operated by the part 1801;? the key mechanism, andashere shown,

a cam in theuform of a disk 33is'-mo1mted' on thestuds-2'4- adjacent thewheel 19'. The cam is formed with a notehor recess 34. arranged toreceive: the spring switch arnr 29 and per-' init it to separate fromthe terminal 28'Wl16n the bolt 12 is in locked position, Fig; 4, andwith an inclined portion 35 at one side of the notch for forcin thespring arm onto the face'or high snr ace 36 of the cam and en-- gage theterminal 28 when the part 18 is turned to shift the bolt i nto unlockedposition.

The head 1 is enclosed in a casing 3-? which cover the ends of all thetransverse recesses, except the outer end of the recess 17 which the keymechanism 16 is located.

In operation, when the motor vehicle provided with my controllingmechani m, is

parked, or left without an attendant, the operator turns the key of themechanism in the casing 16 to turn the part 18" and the member or wheel19 to shift the bolt into locked position, so that the head 1 cannot hedepressed. The turning of the member 18 also turnsthe cam 33 so that itsnotch 34s receives the ignition switch arm 29, and breaks the ignitioncircuit. To start theengine the part 18*is turned by the key moving thebolt 12 to unlocked position to permit the head 1 to be depressed, andmoving the ignition switch arm 29' to close the ignition circuit.

The ignition switch 25 and'its arrangement in the: head 1' forms the subectmatter of my application Serial No; 594,249, filed-October 1a, r925,Patent No.1,544',261- dated June 30, 1925 of which this application is adivision.

What I claim is:

In a locking mechanism, the combination of a stationary tubular guideand an operating member comprising a head mounted on the 'end of theguide and-reciprocally mow able relatively thereto, the headhaving agroove at its lower face for receiving then-p per end of the guide, thehead also havin'gia stem movable in the: guide and the: head also:having a passage extending; transversely thereof and oftheupper end 0%the tubular guide, a locking bolt movable in the trans verse passage andhaving a recess movable into and out of aliinement with the groove andwith the upper end of the tubular guide and-mechanism carried by thehead foroperating the'loc-king bolt.

In testimony whereof, I have hereunto signed m name, at Syracuse, in thecounty of Onerr agar, and State of New" York, this 27th day ofMay,:1925.

WILLIAM. METZROTH. i

